CSA Mega-Midget Racer User Manual Download Page 1

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COMPUTER SYSTEM ASSOCIATES, INC.

7564 Trade Street

San Diego, Calif. 92121

(619) 566-3911

Mega-Midget Racer™

User’s Manual

QUALITY MICROPROCESSOR ENGINEERING

Summary of Contents for Mega-Midget Racer

Page 1: ...COMPUTER SYSTEM ASSOCIATES INC 7564 Trade Street San Diego Calif 92121 619 566 3911 Mega Midget Racer User s Manual QUALITY MICROPROCESSOR ENGINEERING...

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Page 3: ...Computer System Associates Inc CSA Mega Midget Racer Accelerator User s Manual For Commodore Amiga A500 A1000 A2000 Series Computers Mega Midget Racer User s Manual...

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Page 5: ...oard 13 9 Mega Midget Racer Software Installation and Usage 17 10 Trouble Shooting the Mega Midget Racer 20 The contents of this manual are copyrighted by Computer System Associates Inc CSA All Rights...

Page 6: ...et Racer replaces the Amiga s MC68000 processor with a plug in MC68030 daughterboard that includes a floating point co processor socket sockets for 512K bytes of 32 bit SRAM a socket for the MC68000 a...

Page 7: ...ENT OF THE DEFECTIVE PRODUCT IN ITS SOLE DISCRETION AND SHALL NOT IN ANY EVENT INCLUDE DAMAGES FOR LOSS OF USE OF OR LOSS OF ANTICIPATED COSTS EXPENSES OR DAMAGES INCLUDING WITHOUT LIMITATION ANY DATA...

Page 8: ...Registration All CSA products are registered and warranted at the time of shipment and require no further action on the part of the purchaser Repair Any product returned to CSA for repair must be acc...

Page 9: ...ga system The Amiga system operates at a basic frequency of about 7 MHz while the Mega Midget Racer operates at frequencies between 20 and 33 MHz In general an access to the Amiga system is much slowe...

Page 10: ...t wide data and address support for additional hi speed memory and other I O devices in 8 16 and 32 bit configurations Special Cache Control Logic A special cache control PLD programmable logic device...

Page 11: ...lly tested at the factory with all jumpers set for normal operation You may need to change the jumper settings depending on whether you are using a math floating point co processor chip FPU the MC6888...

Page 12: ...ou have installed your 68000 CPU in U7 then remove the black shorting block from W4 If U7 does not contain a 68000 CPU then place a black shorting block on W4 Verifying the 512K Jumper Setting 8 Locat...

Page 13: ...This connector is not keyed and must be reassembled with the same cable orientation f Remove four sheet metal screws which hold down the internal electrostatic shield g Bend up four sheet metal hold d...

Page 14: ...the unit with the Mega Midget Racer installed and the electrostatic shield still removed to make sure that the system is operational m Turn off power and disconnect all cables and keyboard Carefully...

Page 15: ...the cover gets caught DO NOT FORCE IT Check under the cover to see if any internal cables are holding it If so correct the problem before continuing with the cover removal NOTE If your Amiga contains...

Page 16: ...LLATION COULD CAUSE DAMAGE TO BOTH THE A2000 AND THE Mega Midget Racer IF YOU HAVE ANY QUESTIONS ABOUT THE INSTALLATION PLEASE CONTACT CSA ON THE TECHNICAL HOT LINE 619 566 3923 FOR ASSISTANCE Reassem...

Page 17: ...connections are required CSA s innovative design permits the use of readily available low cost user installable DRAM chips The CSA Mega Memory DRAM daughter board is jumpered to select 1MB or 2MB of R...

Page 18: ...chips or if you are changing from 256kx4 chips to 1Mx4 chips 1 Observe the recommended handling precautions in Section 5 of this manual to prevent static discharge damage to the DRAM chips and accele...

Page 19: ...e DRAM chips being used If 1Mx4 DRAM chips are being used a black shorting block should be placed over jumper W1 For 256kx4 DRAM chips W1 should be open Jumper W2 labeled BANKS is set according to how...

Page 20: ...nectors JP1 and JP2 are aligned with the daughter board edge connectors J1 and J2 Note that JP1 and J1 are 40 pin connectors and that JP2 and J2 are larger 50 pin connectors The respective 40 and 50 p...

Page 21: ...miga ROM kernel into the Mega Midget Racer s 32 bit SRAM if present SRAM adds the Mega Midget Racer s 32 bit SRAM to system memory if present and if not all used by SROM feature DRAM configures CSA Me...

Page 22: ...l in manipulating the Mega Midget Racer s resources Amiga_Status Icon Running the Amiga_Status program displays information about the current system configuration The program displays the processor an...

Page 23: ...described above must be run before the Switch_CPU program will function properly The following programs are not required for the proper operation of the Mega Midget Racer accelerator They are provide...

Page 24: ...ssor is clocked at the frequency of the oscillator in the U5 socket If JP3 is in the OSC position no oscillator is present in U5 and a coprocessor is installed the system will crash Fix Change jumper...

Page 25: ...esent in the start up sequence and is properly adding SROM SRAM and DRAM if they are installed Fix Reinstall the CSA MMR program in the start up sequence See User s Manual Section 9 p 17 Mega Midget R...

Page 26: ...Shell ICON to provide access to the Command Line Interface CLI 2 After the prompt on the CLI screen type in CSA CSA MMR DRAM return For operation at a frequency other than 25 Mhz 1 After boot up clic...

Page 27: ...ctory To check this type DIR C return CSA MMR should appear in the directory as a file CAUTION Read the Amiga Owner s Manual before performing the following operations to add CSA s 32 bit memory to yo...

Page 28: ...s are used and the Amiga system is instructed to properly utilize the 32 bit SRAM area when installed on the accelerator To use CBM s 2 0 ROM with 32 bit SRAM 1 Install the 2 0 ROM on the Amiga mother...

Page 29: ...the same except that the ZIP version does not have any jumpers to configure or chips to install Refer to your manual section 8 for full instructions To help you identify which version of the DRAM dau...

Page 30: ...ust be used when CSA s 32 bit memory either SRAM or DRAM is installed and is being used as Fast RAM on the Mega Midget Racer To use a MASK the statement below must be added to the mount list on the ha...

Page 31: ...mark as shown Insert MC68030 in socket U10 with polarity mark as shown Insert MC68881 882 in socket U9 with polarity arrow as shown Insert crystal oscillator in sockets U5 U6 with polarity dot as show...

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